1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58The European Standard EN 12794:2005, incorporating amendment A1:2007, has the status of a British S
2、tandardICS 91.100.30; 93.020Precast concrete products Foundation pilesBRITISH STANDARDBS EN 12794:2005Incorporating amendment no. 1BS EN 12794:2005account the requirements of the European Commission mandate M/100, Precast concrete products, given under the EU Construction Products This British Stand
3、ard was published under the authority of the Standards Policy and Strategy Committee on 17 May 2005 BSI 2007ISBN 978 0 580 59557 8The Commission in consultation with Member States has agreed a transition period for the co-existence of harmonized European Standards and their corresponding national st
4、andard(s). It is intended that this period will comprise a period, usually nine months, after the date of availability of the European Standard, during which any required changes to national regulations are to be made, followed by a further period, usually of 12 months, for the implementation of CE
5、marking. At the end of this co-existence period, the national standard(s) will be withdrawn.EN 12794 is the subject of transitional arrangements agreed under the Commission mandate. In the UK, there are no corresponding national standards.This publication does not purport to include all the necessar
6、y provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date Comments17219 31 July 2007 Implementation of CEN amendment A1:2007Directive (89/106/EEC), an
7、d is intended to lead to CE marking. The date of applicability of EN 12794 as a harmonized European Standard, i.e. the date after which this standard may be used for CE marking purposes, is subject to an announcement in the Official Journal of the European Communities.National forewordThis British S
8、tandard is the UK implementation of EN 12794:2005.The UK participation in its preparation was entrusted to Technical Committee B/524, Precast concrete products.A list of organizations represented on this committee can be obtained on request to its secretary.EN 12794 is a candidate “harmonized” Europ
9、ean standard and fully takes into EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12794:2005+A1 May 2007 ICS 91.100.30; 93.020 Supersedes EN 12794:2005English Version Precast concrete products - Foundation piles Produits prfabriqus en bton - Pieux de fondation Betonfertigteile - Grndungspfhle T
10、his European Standard was approved by CEN on 22 November 2004 and includes Amendment 1 approved by CEN on 6 April 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without
11、 any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language ma
12、de by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fra
13、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE F
14、R NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12794:2005+A1:2007: EEN 12794:2005+A1:2007 (E) 2 Contents !The numbering of clauses is strictly related to EN 133
15、69:2004 “Common rules for precast concrete products”, at least for the first three digits. When a clause of EN 13369 is not relevant or included in a more general reference of this European Standard, its number is omitted and this may result in a gap in numbering.“ Page Foreword3 Introduction .5 1 S
16、cope 6 2 Normative references 6 3 Terms and definitions .6 4 Requirements.9 5 Test methods16 6 Evaluation of conformity.16 7 Marking .17 8 Technical documentation .17 Annex A (normative) Type test method for the verification of robustness and rigidity of pile joints .18 Annex B (normative) Design as
17、pects in reference with EN 1992-1-1.22 Annex C (normative) Provisions for the design and manufacture of piles reinforced with a single bar in reference with this document and EN 1992-1-1.26 Annex D (informative) Provisions for the design and installation of piles and pile segments reinforced with a
18、single bar28 Annex E (normative) Method to measure perpendicularity of the pile top, pile bottom or pile joint against pile axis .29 Annex Y (Informative) Choice of CE marking method.43 Bibliography44 EN 12794:2005+A1:2007 (E) 3 Foreword This document (EN 12794:2005+A1:2007) has been prepared by Tec
19、hnical Committee CEN/TC 229 “Precast concrete products”, the secretariat of which is held by AFNOR. This document was examined by and agreed with a joint working party appointed by the Liaison Group CEN/TC 229 - CEN TC 250, particularly for its compatibility with structural Eurocodes. This document
20、shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2007 and conflicting national standards shall be withdrawn at the latest by November 2007. This document includes Amendment 1, approved by CEN on 2007-04-06. This
21、 document supersedes EN 12794:2005. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential requirement
22、s of EU Construction Products Directives (89/106/EEC). This document is one of a series of product standards for precast concrete products. For common aspects reference is made to EN 13369: Common rules for precast products, from which also the relevant requirements of the EN 206-1: Concrete Part 1:
23、 Specification, performances, production and conformity are taken. The references to EN 13369 by CEN/TC 229 product standards are intended to make them homogeneous and to avoid repetitions of similar requirements. Eurocodes are taken as a common reference for design aspects. The installation of some
24、 structural precast concrete products is dealt with by ENV 13670-1: Execution of concrete structures Part 1: Common rules, which has at the moment the status of an European prestandard. In all countries it can be accompanied by alternatives for national application and it shall not be treated as an
25、European Standard. The programme of Standards for structural precast concrete products comprises the following Standards, in some cases consisting of several parts: EN 1168, Precast concrete products Hollow core slabs EN 12794, Precast concrete products Foundation piles EN 12843, Precast concrete pr
26、oducts Masts and poles EN 13747, Precast concrete products Floor plates for floor systems prEN 15037-1, Precast concrete products Beam-and-block floor systems Part 1: Beams prEN 15037-2, Precast concrete products Beam-and-block floor systems Part 2: Blocks EN 13224, Precast concrete products Ribbed
27、floor elements EN 13225, Precast concrete products Linear structural elements EN 12794:2005+A1:2007 (E) 4 EN 14992, Precast concrete products Wall elements : Products properties and performances prEN 15258, Precast Concrete Products Retaining wall elements EN 13693, Precast concrete products Special
28、 roof elements EN 14844, Precast concrete products Box culverts EN 13978, Precast concrete products Precast concrete garages EN 14991, Precast concrete products Foundation elements EN 15050, Precast concrete bridge elements EN 14843, Precast concrete products Stairs This document defines in Annex ZA
29、 the application methods of CE marking to products designed using the relevant EN Eurocodes (EN 1992-1-1). Where, in default of applicability conditions of EN Eurocodes to the works of destination, design Provisions other than EN Eurocodes are used for mechanical strength, the conditions to affix CE
30、 marking to the product are described in ZA.3.4. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Ge
31、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 12794:2005+A1:2007 (E) 5 Introduction This document specifies the requirements, the basic perfo
32、rmance criteria and detailing provisions for precast concrete foundation piles manufactured in a factory environment, stored, transported and ultimately installed on a construction site. The design of structural products shall ensure their fitness for the particular application. Particular attention
33、 is to be paid to design co-ordination with other parts of the construction. EN 12794:2005+A1:2007 (E) 6 1 Scope This document specifies the terminology, requirements, basic performance criteria, test methods and evaluation of conformity that will be applied to precast concrete foundation piles, fac
34、tory produced for building and civil engineering works and installed at the site by the use of impact, vibration, pressing or other suitable techniques. This document may also be applied to products manufactured in temporary plants on site where production is controlled in accordance with the provis
35、ions of Clause 6 and is protected against adverse weather conditions as necessary. This document applies to foundation piles produced in a plant as reinforced or prestressed concrete elements. The cross-section may be solid or provided with a hollow core, either prismatic or cylindrical. The cross-s
36、ection may be constant over the full length or tapered partly or wholly along the pile or pile segment length. This document deals with foundation piles manufactured either in one length or in segments with cast-in pile joints. The foundation piles may have an enlarged toe or a pile shoe. This docum
37、ent applies to normal weight concrete as defined in EN 206-1 compacted so as to retain no appreciable amount of entrapped air other than entrained air. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edi
38、tion cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1992-1-1:2004, Eurocode 2: Design of concrete structures Part 1-1: General rules and rules for buildings EN 1997-1:2004, Eurocode 7: Geotechnical design Part 1: General ru
39、les EN 13369:2004, Common rules for precast concrete products 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13369:2004 and the following apply. In general the term “product” refers to an element which is produced in large numbers. 3.1 Foundation pil
40、es A number of these definitions are illustrated in Figure 1. 3.1.1 pile long element to be driven in the ground to provide support to the foundation 3.1.2 single length pile pile without joints 3.1.3 segmental pile pile with joints 3.1.4 pile length distance between pile top and pile bottom EN 1279
41、4:2005+A1:2007 (E) 7 3.1.5 pile segment single unit of a jointed pile 3.1.6 segment length length of a pile segment forming a part of the pile length 3.1.7 pile top surface of a pile head 3.1.8 pile head upper section of a pile 3.1.9 pile shaft section of the pile between pile head and pile toe 3.1.
42、10 pile toe lower part of a pile 3.1.11 pile bottom surface of a pile toe 3.1.12 enlarged toe a concrete section with a cross-section greater than the pile shaft, cast in one production operation 3.1.13 shape factor ratio between the pile length or the length of a segment and the smallest transverse
43、 dimension of the shaft 3.1.14 pile joint a device by which separate segments of a segmental pile are structurally connected 3.1.15 pile shoe a device by which the pile toe may be strengthened or protected 3.1.16 crack ring a device by which the pile head or toe may be strengthened or protected EN 1
44、2794:2005+A1:2007 (E) 8 Key 1 Pile top 2 Pile length 3 Shaft length 4 Pile segment 5 Segment length 6 Pile joint 7 Pile shoe 8 Pile toe 9 Pile bottom Figure 1 Terms and definitions EN 12794:2005+A1:2007 (E) 9 4 Requirements 4.1 Material requirements For general aspects, constituent materials of conc
45、rete, reinforcing and prestressing steel, inserts and connectors the relevant Clauses of EN 13369:2004 4.1 shall apply. The ultimate tensile and tensile yield strength of steel shall be considered. 4.2 Production requirements 4.2.1 Concrete production 4.2.1 of EN 13369:2004 shall apply. 4.2.2 Harden
46、ed concrete 4.2.2.1 Strength classes 4.2.2.1 of EN 13369:2004 shall apply. The minimum concrete class for either reinforced or prestressed precast foundation piles shall be C35/45. 4.2.2.2 Compressive strengths 4.2.2.2 of EN 13369:2004 shall apply. The minimum compressive strength to achieve before
47、transportation or when applicable also before installation of the pile shall be specified. 4.2.3 Structural reinforcement 4.2.3.1 Processing of reinforcing steel 4.2.3.1 of EN 13369:2004 shall apply. 4.2.3.2 Tensioning and prestressing 4.2.3.2.1 Initial tensioning stresses 4.2.3.2.1 of EN 13369:2004
48、 shall apply. 4.2.3.2.2 Accuracy of tensioning Class A of 4.2.3.2.2 of EN 13369:2004 shall apply. 4.2.3.2.3 Minimum concrete strength at transfer 4.2.3.2.3 of EN 13369:2004 shall apply. 4.2.3.2.4 Slippage of tendons Not relevant due to the common production technique. EN 12794:2005+A1:2007 (E) 10 4.
49、3 Finished product requirements 4.3.1 Geometrical properties 4.3.1.1 Production tolerances The following tolerances shall apply unless stricter tolerances are specified for single piles or pile segments: the axis of the pile shaft after production and without the influence of bending stresses shall be straight. The permitted production deviation of straightness is shown in Table 2; for cross-sectional dimensions L, the permitted deviation is L from nominal dimensions, see Table 2; the to
